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220 Piston Pump
Service Manual
Table of Contents
Part Identification .......................................................................................................................................................................................3
Exploded Assembly ....................................................................................................................................................................................4
Optional Assembly......................................................................................................................................................................................5
Typical Cross Section ..................................................................................................................................................................................6
Shaft, Drive and Key ...................................................................................................................................................................................7
End Cover S/A ............................................................................................................................................................................................8
Valve Plate ..................................................................................................................................................................................................9
Housing .................................................................................................................................................................................................... 10
Rotating Group ......................................................................................................................................................................................... 10
Swash Plate .............................................................................................................................................................................................. 10
Shaft Seal.................................................................................................................................................................................................. 10
Compensator ............................................................................................................................................................................................ 11
Plug Subassemblies ................................................................................................................................................................................. 11
Pump Repair .............................................................................................................................................................................................12
Inspection, Repair and Part Replacement .................................................................................................................................................16
Assembly ..................................................................................................................................................................................................19
Assembly Torque Values ...........................................................................................................................................................................22
2 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Part Identification -
220 Series Pumps
Item
1
2
Part Number
See table 1
6028118-XXX
Quantity Description
1
AR
Shaft, Drive
Spacer, Bearing / Bearing Shim Kit
3
4
5
6
See table 1
See Table 2
16026-610
See table 3
1
1
1
1
Key, Driveshaft
End Cover S/A
Roll Pin
Valve Plate
7 104166-156 1 O-Ring
8
9
10
See table 4
388153
02-335336
1
1
1
Housing
Bearing Assembly, Shaft (Front)
Bearing Assembly, Shaft (Rear)
15
16
17
18
11
12
13
14
6026924-001
114995-010
5992034-001
6026917-001
6026982-001
114977-035
16253-218
16077-032
1
4
1
1
2
2
1
1
19
20
21
22
See Table 8
107275-011
107275-017
114953-030
1
4
1
4
23
24
6030097-001
16103-312
1
1
25 16103-302 3
26 See table 9 3
Bearing, Swash Plate
Screw, Cap, Socket
Spring, Bias
Swash Plate
Rotating Group S/A
Screw, Cap (Housing / End cover)
Seal, Shaft, Fluorocarbon l
Ring, Retaining, Internal (Shaft Seal) l
Compensator S/A
O-Ring (Secondary Compensator / Housing) l
O-Ring (Compensator / Housing) l
Screw, Cap (Compensator Mounting)
Piston, Control
Plug, Fixed Volume Stop u
Plug
Plug (Bottom, Top and Side Case Drain Ports)
31
32
33
34
27
28
29
30
See table 9
See table 9
6026914-001
114995-010
5990203-001
54999158
104166-021
6024371-002
35
36
37
38
6027085-001
16026-406
6030096-350
692866
39 16133-12
40 937166
1
1
1
1
1
1
1
1
2
1
1
1
1
2
Plug (Vertical Case Drain Port)
Plug (Diagnostic Port)
Link, Feedback (Feedback Sensor Option)
Screw, Cap, Socket, Flat, Countersunk (Feedback Sensor Option)
Magnet Carrier (Feedback Sensor Option)
Adapter, Swash Sensor (Feed Sensor Option)
O-Ring (Adapter / Swash Sensor Assy) l (Feedback Sensor Option)
Feedback Sensor, Non-Contact (Feedback Sensor Option)
Screw, Cap S/A (Swash Sensor) (Feedback Sensor Option)
Pin, Roll (Feedback Link) (Feedback Sensor Option)
Screw, Cap u (Adjustable Maximum Stop Option)
Nut Sealing u (Adjustable Maximum Stop Option)
Tamper Proof Cap l Standard Seal Kit: 9900959-000
Shaft bearing Shim Kit: 9900961-000
10
–
10
–
11
–
–
–
10
10
–
–
–
9
7
8
–
Page Number
7
18
5
5
11
11
–
11
11
–
–
–
–
5
5
5
5
5
5
5
5
5
–
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 3
Exploded Assembly -
220 Series Pump
Part Item Number
4 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Optional Assembly
-
220 Series Pumps
Part Item Number
Feedback Sensor Option
Adjustable Maximum
Stop Option
24
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 5
Typical Cross Section
-
220 Series Pumps
Side View
6 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Shaft, Drive and Key - Item 1 & 3
Table 1
Table 1 - Shaft, Drive and Key (Items 1 & 3)
Code Position
4,5,6 8,9
028 05
028
028
028
09
31
34
24,25
00
00
00
00
Key (Item 3)
24500-619
-
16246-516
-
Part Number
6026704-003
6026704-001
6026704-002
6026704-004
Description
Shaft, Drive, 22.2 Dia. Straight Key, 41 mm Ext.
Shaft, Drive, Input 13 Tooth 16/32, 41 mm Ext.
Shaft, Drive, 25.4 Dia. Straight Key, 46 mm Ext.
Shaft, Drive, Input 15 Tooth 16/32, 46 mm Ext.
220 Series Mobile Piston Pump
Drive Shaft
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 7
End Cover S/A - Item 4
Table 2
Table 2 - End Cover S/A (Item 4)
Code Position
4,5,6 7
028 L,R
028
028
028
028
028
L,R
L,R
L,R
L,R
L,R
10,11 13
AA 1
AB
AC
AD
AE
AF
1
2
2
1
1
24,25
00
00
00
00
00
00
Part Number
6026786-002
6026786-001
6026786-006
6026786-005
6026786-004
6026786-003
Description
End Cover S/A, Rear Port 28 cc (O-ring Port)
End Cover S/A, Side Port 28 cc (O-ring Port)
End Cover S/A, Rear Port 28 cc Metric
End Cover S/A, Side Port 28 cc Metric
End Cover S/A, Rear Port 28 cc (4 Bolt Flange Port)
End Cover S/A, Side Port 28 cc (4 Bolt Flange Port)
220 Series Mobile Piston Pump
End Cover views
Side Port
8 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Rear Port
Valve Plate - Item 6
Table 3
Table 3 - Valve Plate (Item 6)
Code Position
4,5,6 7
028
028
R
L
Part Number
6029630-001
6029630-002
Description
Plate, Valve (RH 28 cc)
Plate, Valve (LH 28 cc)
220 Series Mobile Piston Pump
Valve Plate Identification
RH LH
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 9
Housing - Item 8
Rotating Groups - Item 15
Swash Plate - Item 14
Shaft Seal - Item 17
Tables 4, 5, 6 & 7
Table 4 - Housing (Item 8)
Code Position
8,9 12 27,28
05,09,31,34 A,B,G AB
05,09,31,34 A,B,E,G 00
05,09,31,34 C,D,F,H 00
Part Number Description
6026919-001 Housing (Feedback Sensor)
6026919-002 Housing
6026919-003 Housing Metric Drain Port
Table 5 - Rotating Group (Item 15)
Code Position
4,5,6
028
Part Number
6026982-001
Description
Rotating Group S/A (28 cc)
Table 6 - Swash Plate (Item 14)
Code Position
4,5,6
028
Part Number
6026917-001
220 Series Mobile Piston Pump
Swash Plate View
Table 7 - Shaft Seal (Item 17)
Code Position
4,5,6
1
Part Number
16253-218
220 Series Mobile Piston Pump
Shaft Seal View
Description
Swash Plate (28 cc)
Description
Seal, Shaft, Fluorocarbon
10 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Compensator - Item 19
Plug Subassemblies - Item 26, 27 & 28
Table 8, 9
C
C
C
C
C
C
B
B
B
Table 8 - Compensator (Pump Controls) (Item 19)
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Control
Code Code
14 15,16 Pressure Limit Setting
A 27 199.9-206.8 bar [2900-3000 lbf/in 2 ]
28
28
28
28
28
28
32
35
206.8-213.7 bar [3000-3100 lbf/in
206.8-213.7 bar [3000-3100 lbf/in
206.8-213.7 bar [3000-3100 lbf/in
206.8-213.7 bar [3000-3100 lbf/in
206.8-213.7 bar [3000-3100 lbf/in
206.8-213.7 bar [3000-3100 lbf/in
226.5-233.4 bar [3285-3385 lbf/in
241.3-248.2 bar [3500-3600 lbf/in
2
2
2
2
2
2
2
2
]
]
]
]
]
]
]
]
42
42
43
43
36
36
40
40
43
43
246.5-253.4 bar [3575-3675 lbf/in 2 ]
246.5-253.4 bar [3575-3675 lbf/in 2 ]
262.0-268.9 bar [3800-3900 lbf/in 2 ]
262.0-268.9 bar [3800-3900 lbf/in 2 ]
272.4-279.3 bar [3950-4050 lbf/in 2 ]
272.4-279.3 bar [3950-4050 lbf/in 2 ]
275.8-282.7 bar [4000-4100 lbf/in 2 ]
275.8-282.7 bar [4000-4100 lbf/in 2 ]
275.8-282.7 bar [4000-4100 lbf/in 2 ]
275.8-282.7 bar [4000-4100 lbf/in 2 ]
28
28
43
206.8-213.7 bar [3000-3100 lbf/in 2 ]
206.8-213.7 bar [3000-3100 lbf/in 2 ]
275.8-282.7 bar [4000-4100 lbf/in 2 ]
12 137.9-144.8 bar [2000-2100 lbf/in 2 ]
19 168.9-175.8 bar [2450-2550 lbf/in 2 ]
21 179.3-186.2 bar [2600-2700 lbf/in 2 ]
28
43
206.8-213.7 bar [3000-3100 lbf/in
275.8-282.7 bar [4000-4100 lbf/in
2
2
]
]
45 306.8-313.7 bar [4450-4550 lbf/in 2 ]
24
28
24
00
00
00
00
00
00
Code
17,18 Flow Setting
25 23.44-26.89 bar [340-390 lbf/in 2 ]
10 2 ]
14
14
23
12.41-15.17 bar [180-220 lbf/in
12.41-15.17 bar [180-220 lbf/in
23.10-25.17 bar [335-365 lbf/in
2
2
2
]
]
]
24
30
22.75-25.51 bar [330-370 lbf/in 2 ]
28.27-31.72 bar [410-460 lbf/in 2 ]
16 13.79-16.55 bar [200-240 lbf/in 2 ]
14 12.41-15.17 bar [180-220 lbf/in 2 ]
14 12.41-15.17 bar [180-220 lbf/in 2 ]
22 20.68-23.44 bar [300-340 lbf/in 2 ]
14 12.41-15.17 bar [180-220 lbf/in 2 ]
10 2 ]
10 2 ]
10 2 ]
14
14
12.41-15.17 bar [180-220 lbf/in 2 ]
12.41-15.17 bar [180-220 lbf/in 2 ]
16
24
13.79-16.55 bar [200-240 lbf/in 2 ]
22.75-25.51 bar [330-370 lbf/in 2 ]
22.75-25.51 bar [330-370 lbf/in 2 ]
26.20-28.96 bar [380-420 lbf/in 2 ]
22.75-25.51 bar [330-370 lbf/in 2 ]
No Flow Comp. Setting
No Flow Comp. Setting
No Flow Comp. Setting
No Flow Comp. Setting
No Flow Comp. Setting
No Flow Comp. Setting
00
0A
00
00
00
00
00
00
00
Code
21,22
00
00
00
00
00
0A
00
0A
00
00
0A
00
0A
00
0A
0A
00
00
00
Kit Number
9900512-003
9900512-013
9900512-022
9900512-026
9900512-001
9900512-032
9900512-017
9900512-002
9900512-028
9900512-014
9900512-031
9900512-005
9900512-027
9900512-007
9900512-006
9900512-010
9900512-015
9900512-008
9900512-018
9900512-012
9900512-019
9900512-011
9900512-021
9900512-023
9900512-029
9900512-016
9900512-009
9900512-004
Kit Contents
21
20
19
40
22 4x Torque 8.2±0.8 Nm
Table 9 - Plug Subassemblies (Items 26, 27 & 28)
Code Position
12
A,B,E,G
C,D,F
A,B,E
C,D,F
-
-
-
1
2
13
-
-
-
-
-
-
27,28
00,AB
00,AB
-
Part Number
16103-310
9237-005
16103-308
9237-004
16103-304
9237-002
Description
Plug (Bottom, Side and Top Case Drain) .875-14 UNF-2B Thd.
Plug (Bottom, Side and Top Case Drain) M22 X 1.5 Thd.
Plug (Vertical Case Drain) .750-16 UNF-2B Thd.
Plug (Vertical Case Drain) M18 X 1.5 Thd.
Plug (Diagnostic Ports) .4375-20 UNF-2B Thd.
Plug (Diagnostic Ports) M12 X 1.5 Thd.
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 11
Pump Repair
Cut Section
12 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Pump Repair
Cut Section
1. Remove Control Piston Plug Assembly 2. Install Swash Plate Locator Tool Adjustment will take place in step 11.
3. Remove Compensator
4. Remove End Cover Mark the housing and end cover to ensure orientation. Remove the four cap screws that hold the end cover in place.
Note: The valve plate may stick to end cover. Use caution so valve plate does not fall off.
5. Remove O-ring Seal
6. Remove Valve Plate
7. Remove Bearing Race The bearing race is pressed in and will require the use of a sliding bearing removal hammer or similar tool to remove it.
8. Remove Bearing
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 13
Pump Repair
Cont.
9. Remove Housing O-rings 10. Install Swashplate retainer install the swash plate hold down tool and tighten the cap screw. This will prevent the swash plate from moving.
11. Swashplate adjustment locator with the hold down tool in place, tighten the adjustment screw so the control piston spring is compressed.
Note: This step is designed to force the swashplate to a neutral position to enable easy removal of the rotating group, and to retain the swashplate.
12. Install Shaft Retainer Tool and tighten the set screw while being careful not to damage shaft.
13. Remove rotating group
14. Remove shaft remove shaft retainer tool and lift out shaft. Use caution when moving shaft through shaft seal.
15. Remove Swashplate Locator 16. Remove Swashplate Retainer
14 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Pump Repair
Cont.
17. Remove Control Piston
19. Remove Bias Spring
18. Remove Swashplate
20. Remove Bearing
21. Remove Cradle Bearing Screws Caution: Socket head cap screws are easily damaged during repair with improper tool.
22. Remove Cradle Bearings Note: The cradle bearings are asymmetrical.
Note: Proper orientation shown in picture.
23. Remove Front Bearing Race 24. Remove Shaft Seal With the seal retaining ring removed use a punch or similar tool to knock out the shaft seal.
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 15
Inspection, Repair and
Part Replacement
Inspection
Inspection
Before inspection of parts, clean with a solvent that is compatible with system fluid.
Piston Block
Rotating Group Parts
1. Inspect cylinder block face for wear, scratches, and/or erosion. If cylinder block condition is questionable, replace the entire rotating group.
2. Remove the pistons, shoe retainer, and pivot from piston block. The piston block assembly doesn’t need to be disassembled unless the internal pins or spring are damaged.
3. Check each cylinder block bore for excessive wear. Use the piston and shoe S/A for this purpose. The pistons should be a very close fit and slide in and out of the cylinder block bores. NO BINDING CAN BE TOLERATED. If binding occurs, clean the cylinder block and pistons. Lubricate the cylinder block bores with clean fluid and try again. Even minor contamination of the fluid may cause a piston to freeze up in a cylinder bore.
4. Inspect each of the nine piston and shoe S/A for a maximum end play of 0.005 inch between the piston and shoe.
Also check the face dimension of each shoe. The face dimension must be within 0.001 inch.
5. Inspect shoe retainer and pivot for wear and/or scratches.
If condition is questionable, replace entire rotating group.
Pivot
Note: Do not lap the face of piston block assembly.
Piston S/A Tolerances This dimension must be maintained on all nine shoes within 0.001 inch.
± 0.001”
Between Piston
Shoes (9)
Shoe Piston
Shoe face rides on swash plate. Shoe must swivel smoothly on ball.
End play must not exceed
0.005 inch.
Movement up to 0.005”
Shoe
Retainer
Piston (9) and Shoe
S/A
16 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Inspection, Repair and
Part Replacement
End Cover &
Associated Parts
Swashplate Parts
Shaft/Housing Parts
1. Inspect end cover for erosion, cracks, and burrs.
Clean up minor burrs with an India stone. If erosion or cracks are found, replace the end cover.
2. Inspect roller bearing and bearing race for nicks and pitting. Make sure the roller bearing turns freely within the bearing race. If the roller bearing needs replacement, both the roller bearing and the bearing race must be replaced.
3. Inspect valve plate for erosion, excessive wear, heavy scratches, and cracks. If any of the above conditions are found, replace the valve plate.
4. Inspect control piston and maximum displacement screw for burrs, scratches and cracks. Clean up minor scratches with 500 grit paper. Remove burrs with an India stone. The control piston should move freely in the bore.
1. Inspect swashplate face for wear, roughness or scoring.
Check the swashplate hubs and bearing surfaces for wear and cracks. Replace if defective.
2. Inspect saddle bearing surfaces for wear, pitting, and smooth operation. Replace if necessary.
1. Inspect drive shaft for wear, stripped splines, and burrs.
Remove burrs with an India stone. Inspect the contact area of bearing and shaft seal). Replace the drive shaft if wear or scoring is greater than 0.005 T.I.R. (total indicator reading).
2. Inspect drive shaft bearing for roughness, pitting of rollers, and excessive end play. Replace, if defective.
If the bearing needs to be replaced, the bearing race also requires replacement.
3. Inspect housing mounting flange for nicks and burrs.
Remove minor nicks and burrs with an India stone.
Also check the housing for damaged or stripped threads. If any thread is damaged, replace the housing.
4. Check remaining pump parts for excessive wear, damaged threads, burrs, cracks and erosion. Replace any part that is in questionable condition.
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 17
Inspection, Repair and
Part Replacement
Shimming Process
Shafty Bearing Shim
Kit 9900961-000
Shimming Process
Installation Information
This skim kit is to replace the bearing spacer within the pump housing. If the housing, drive shaft, shaft bearings or end cover is replaced during servicing, the original bearing spacer can no longer be used to assure proper bearing set.
End Cover 4
Cap Screw 16
Front Bearing 9
Bearing Spacer 2
Rear Bearing 10
Shaft 1
Shim Kit 9900961-000 2
Housing 8
Shimming Procedures
1. Measure the thickness of the existing bearing spacer .
2. To obtain a starting point, stack shims to a few thousandth of an inch less than the measurement of existing bearing spacer . Then insert shims into the end cover in the same location as the removed bearing spacer .
3. Assemble the housing
(without interface 0-ring seals), shaft bearings, shaft and end cover. Install the end cover cap screws and torque to 114±11 Nm.
4. Using a dial indicator, measure drive shaft end play.
Target bearing set range is .0005" to .003" clearance (no preload). Add or remove shims to achieve proper bearing set. If no movement of the shaft is observed, shims will need to be removed and steps 3 and 4 repeated.
5. Finish the assembly of the pump.
18 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Assembly
1. Install Snap Ring and Shaft Seal 2. Insert the Shaft Bearing Race
3. Install Cradle Bearings 4. Install Cradle Bearing Screws
Note: The cradle bearings are asymmetrical. Install as shown in picture.
5. Install Bearing
Note: The old cap screws cannot be reused and must be replaced with new ones because the screws will be damaged during disassembly. The new cap screw threads will be coated with loctite. (2) bearings item 11 and (2) screws item 12.
6. Install Bias Spring
7. Install Swashplate 8. Install Control Piston
Note: With the bias spring in place, tilt the swash plate toward the spring and install the swash plate.
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 19
Assembly
9. Install Swashplate Retainer
11. Install Shaft
10. Install Swashplate Locator
Note: Adjust the screw until the swashplate is near neutral (will look flat in housing).
12. Install Shaft Retainer Tool
Caution: Use care while inserting shaft end through shaft seal.
13. Install the Rotating Group 14. Remove Swashplate Locator
15. Remove Swashplate Retainer 16. Install O-ring Seal
20 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Assembly
17. Install Housing O-rings 18. Install Bearing Race into End Cover
19. Install Valve Plate 20. Install Bearing onto Shaft
Locating Pin
Note: Lightly coat the back plate side of the valve plate with petroleum jelly for retention during assembly. Install the valve plate over the bearing race aligning the small slot on the outside of the valve plate with the roll pin in the end cover.
21. Install End Cover 22. Install Compensator
Note: Ensure correct orientation. Use caution so valve plate does not fall off.
23. Testing
Perform functional test on pump according to Eaton test procedure. Contact your area sales manager for more information.
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 21
Assembly Torque Values
Instructions
Adjustable Maximum Stop
Option
Assembly Torque Values -
Instructions
Feedback Sensor Option
22 EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014
Notes
EATON 220 Piston Pump Service Manual E-PUMC-RR001-E2 February 2014 23
Eaton
Hydraulics Group USA
14615 Lone Oak Road
Eden Prairie, MN 55344
USA
Tel: 952-937-9800
Fax: 952-294-7722 www.eaton.com/hydraulics
Eaton
Hydraulics Group Europe
Route de la Longeraie 7
1110 Morges
Switzerland
Tel: +41 (0) 21 811 4600
Fax: +41 (0) 21 811 4601
Eaton
Hydraulics Group Asia Pacific
Eaton Building
No.7 Lane 280 Linhong Road
Changning District, Shanghai
200335 China
Tel: (+86 21) 5200 0099
Fax: (+86 21) 2230 7240
© 2014 Eaton
All Rights Reserved
Printed in USA
Document No. E-PUMC-RR001-E2
February 2014
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